Checking swap file usage

Constant swapping should be avoided at all cost. You can check current swap activity using the following commands:. The fields si and so show the amount of memory paged in from disk and paged out to disk, respectively. If the server shows continuous swap activity then more memory should be added or the SGA size should be reduced. Actually, swap usage percentage is not so much important. Instead, you should check the swap space, making sure it is not too big or too small.

According to Microsoft, the Windows swap space virtual memory should be 1. As for Linux systems, you can refer to RedHat's saying. The recommended swap space is as follows:.

In most cases, high swap usage may mean that the RAM has heavy load. You can reduce the swap usage by reducing the RAM usage or adding the swap usage. This article explains what high memory usage is and how to check it. Open 'Advanced System Settings' and navigate to the 'Advanced' tab.

Click the 'Settings' button under the 'Performance' section to open another window. Click on the new window's 'Advanced' tab, and click 'Change' under the 'Virtual Memory' section. If you have a page file enabled on your machine, which you should by default, then Windows will dynamically adjust its size for you.

Initially, Windows will configure a page file size based on the amount of memory installed and free disk space available. If you don't run memory intensive applications such as virtual machines and production software other than games, you can shrink the page file down to a fraction of your total available RAM. You can also choose to disable paging completely, thus maximizing your space savings.